fix(relay): refine error message for unsupported MIME types and enhance error handling in OpenAI wrapper

service/error.go

@@ -29,7 +29,7 @@ func MidjourneyErrorWithStatusCodeWrapper(code int, desc string, statusCode int)
 func OpenAIErrorWrapper(err error, code string, statusCode int) *dto.OpenAIErrorWithStatusCode {
 	text := err.Error()
 	lowerText := strings.ToLower(text)
-	if !strings.HasPrefix(lowerText, "get file base64 from url") {
+	if !strings.HasPrefix(lowerText, "get file base64 from url") && !strings.HasPrefix(lowerText, "mime type is not supported") {
 		if strings.Contains(lowerText, "post") || strings.Contains(lowerText, "dial") || strings.Contains(lowerText, "http") {
 			common.SysLog(fmt.Sprintf("error: %s", text))
 			text = "请求上游地址失败"